Solid choice for touch-ups and maintenence.
I have only used this little whitening pen a few times, and I can already see results. Because it works so well so quickly, I know it would be especially helpful after using actual whitening strips. Probably best for touch ups, instead of expecting it to do all of the heavy lifting, but overall a great little whitening pen. It fits perfectly into whatever bag I am carrying, so that I was able to use it on my trip out of town, but also sits on the shelf just perfectly. However, there is a learning curve, but once I learned how to use it properly, I believe I will repurchase. I will just also have to purchase some strips to go along with it.